Materia is a somewhat unique character within the FRAME ARMS GIRL universe.

She was released as the third installment in the FRAME ARMS GIRL series and serves as the 'base body,' which is her most distinctive feature.
There are two versions of Materia available: 'Normal Ver.' and 'White Ver.'

True to its feature as a 'base body,' it has a simple battle suit as its characteristic.
The price is also relatively low within the FRAME ARMS GIRL range.

Being the third release, there is still room for improvement, but another feature is its wide range of articulation.
Therefore, it is also possible to equip it with optional parts and weapons that other characters have.

In the anime version, it can be called the progenitor of FRAME ARMS GIRL, being the first to be created.

It arrives at the protagonist's home along with the 'Normal Ver.' and 'White Ver.', and competes with Gourai.
It can easily handle weapons that other FRAME ARMS GIRLS find difficult to use, and with a well-coordinated combination, it corners Gourai and the others.